Re: [Phpgroupware-users] Scalability

[Christian Rost]

Andreas Schiller schrieb:
> Hi @ll,
>
> does someone have experiences with installations of phpGW for ~5000 Users on 
> ~200 domains???
>
> I'm afraid, not... Then in other words: Which are your largest installations?
>
> I'm right now wondering whether phpGW will be scalable to such an installation 
> - I tend to say "somehow, yes - use some boxes for apache/php with 
> loadbalancers and another number of boxes for pgsql" (mail will be hosted 
> externally)
Hi,

will PHPgw installed with SQL support only or additionally with LDAP support?

We're running PHPgw with LDAP support. In comparision with SQL lookups, the LDAP lookups take 
much more time. We've already optimized the LDAP indexes, but it seems to be related to the LDAP 
API in PHP. To speed up PHPgw, an account(s) lookup should be made only once when an application 
fetches data and not every time the app needs to check up accounts information.

We're running an PHPgw installation with about 150 users, in it's final stage, on a Xeon 3,2GHz 
and 1Gigs of RAM. Currently there are up to 50 users  accessing PHPgw. We have a multi location 
setup with one central Server running PHPgw, MySQL, Apache2 and LDAP for that location. All 
other locations are running Apache2 with a separate PHPgw installation accessing the central 
database backend and LDAP for account lookups.

Your installation with Apache/ PHP separated from your database backend makes sense. We did it 
in a similar way with only one database backend.

Christian



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